Jinn-Kwei Guo

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The distributed queue dual bus network is a LAN/MAN protocol proposed by the IEEE 802.6 committee. It can integrate isochronous and nonisochronous services. Due to its medium access control protocol, the network has the unfairness of access for bursty traffic. This paper explores the effect of bursty lengths on the unfairness. In the simulations of the(More)
With the rapid development of broadband networks and multimedia technologies, P2P video-on-demand service is increasingly gaining popularity over the past few years. However, little work has been done on an important design issue for P2P video-on-demand systems, i.e., determining the maximal service capacity of a system. In this paper, we first propose an(More)
In this paper, we present the design of a CPW-feed printed antenna which improves the connection between the antenna and the coaxial cable. The proposed antenna is designed to cover two frequency bands of 1.84–2.5 GHz and 4.9–6.3 GHz, which are required by the dual-band WLAN communication. In this work, it is found that the distance between(More)
In this paper, we proposed an asymmetry structure of printed dipole antenna which acquires wideband impedance match delivered by a double-side and center-feed-design and an open slot in the small radiator to expand the high resonant frequency band and harvest an antenna that can reach dual and wide band requirements as we proposed here. The frequency bands(More)
Based on the master-slave transmission mode, we proposed a device synchronization method for the light control in ZigBee networks. The lighting devices are distributed over the ground of the road and synchronously flashed at night to improve safety of traffic. Each lighting device is powered by a lithium battery charged by a solar cell during the day.(More)